Nozzle for shoe-channel cementing machines



Dec. 17, 1940. w. LE R MacKENzlE 2,225,066

NoZzLx-J FOR SHOE-CHANNEL CEMENTING MACHINES l original Filed oat.v 20, 1937 2 sheets-sheet 1 Dec. 17, 1940. wl LE R MacKENZlE v 2,225,066v

NOZZLE FOR SHOE-CHANNEL CEMENTING MACHINES original Filed oct. 2o, i957 2 sheets-sheet 2 Patented Dee. l17, 1940 PATENT vorrlcla:

NOZZLE 1F SHOE-CHANNEL CEIYENTING MACHINES Wilbur Le Roy MacKenzie, Beverly, Mass., assign'- or to United Shoe Machinery Corporation, Borough of Flemington, N. J., a corporation of New` Jersey l Original application October 20, 19,37, SerialNo.

170,078. Divided and this application June 17,

19.38, Serial No. 214,262

16 Claims. (-Cl. vS31- 43) My invention relates to nozzles for .machines for applying an adhesive coating, it being particularly concerned with-nozzles through .which cement is extrudedinto the channels of shoe soles.

When, in channel cementing, the'channel bed is comparatively iiat and does not vary greatly in width, as is commonly 'the'.case in Littleway work, less diiculty 'is encountered in the desired application of the adhesive ,to the bed and to the inner side of the channel flap than, for example, when operating on welt shoes.v In shoes of the welt type, while the channel bed at the forepart of the sole is usually flat, this is not true at the shank, and especiallyin womens shoes, where it is usually curved transversely and is frequently Wider than at vthe forepart. With such anapplying device as an extruding nozzle, which has the Aflapcoating and .bed-coating portions in fixed relation, proper deliveryy of the cement throughout l the entire length of the channel of a welt .shoe maybe impossible because of the need -for keeping the nozzleoutlet almost inv contact with the work. It is found that the application of cement to an article from an extruding nozzle requires that the .outlet of the nozzle be kept at a uniform distance from the work and almost in contact therewith in order to obtain a consistentlyuniformcoating of the desired thickness. Of course, if the work is to be flooded withcoating material, .this consideration would ,not apply, but that is not the case with .-mostarticles to be coated. In applying a thin coat, a nozzle which is tilted laterally sov that a portion oi its outlet is at a substantial distance from the work` will coat only. a portion of the width'of the area .to be covered and any tendency of the nozzle to jump over recesses or concavely curved .portions will cause a similar difficulty. The diiculty is increased by abrupt changes in the form of the bed, as at the ball line or juncture of the forepart and shank portions. Variations in the width and transverse contour of the bed also give trouble in obtaining a uniform application of cement. v

Accordingly, it `is an object of the invention to provide an improved nozzlev `through which cement may be extruded into a shoe channel vso as to obtain a substantially `uniform vapplication thereof throughout the length and `Width ofthe channel bed and ap, regardless` of changes in the transverse and longitudinal contour of` the bed. To this end and in accordance with 'features of the invention, the improved nozzle herein shown comprises fixed and yieldable sections which permit the contour of the channellbedto body, by screws 40.

,y n be followedaccurately. The illustrated construction also includes a novel arrangement for securing vthe nozzle in operating position on the inachine.

In the accompanying drawings,

Fig. 1 is an angular view of the operating elements, of a machine including my novel nozzle construction, which are closely associated with the work;

Fig. 2, a detail in broken elevation oi the apply- 1'0 ing nozzle, seen from the side opposite the operators position;

Fig. 3, a broken rear elevation of said nozzle;

Fig, 4, an angular view of the entire nozzle structure; n p

Fig. 5, an angular View of the flap-coating section of the nozzle, withk the opposite plates of which it is "made up separated from each other;

Fig. 6, a similar view of the bed-coating section and including a portion of the supporting member, and` Fig. '7, a detail in elevation, showing the nozzle in co-operation with the shank portion of the sole.

Projecting from one side of the frame l2 of a machine in which the nozzle is supported is a horizontal bracket I6 (Fig. 1) longitudinally slotted to receive the body IB of a nozzle structure by which cement is to be applied to the work. At 20, the nozzle body overhangs and rests on the bracket and is clamped thereto for ready removal lby a double-armed lever 22 fulcruinedV on the body and having threaded through its connecting yoke a screw 24. 'Ihe point of this screw is turned against an inclinededge on the nozzle body I8, and the rounded ends 2,6 of the arms arey forced against the under side of the bracket to x the nozzle in place thereon. A

The cement is delivered to the work through two nozzle sections 30 and 32 (Figs. 4, 5 and 6), which may be of metal or other rigid material` and which respectively coat the inner face of the channel ap and the bed of the channel. The nap nozzle 30 is made up of two plates 34 and 36, the former resting `against a vertical face 38 at the end of the body I8. The outer plate 36 is held against the inner, and said inner against the Extending downwardly along the body and opening through the face 38 is a passage 42 (Fig. 3) to which cement is delivered by way of a iiexible hose 92, a valve |04- and aI pipe 44 rising from the top of the body. Flow through the passage 42 may be governed by ya screw 48 threaded through the body I8, with its end extending into the passage. Through vthe plate 34 of the nozzle section 30 is an opening 50, which registers with the passage 42 and with the upper extremity of a groove 52 (Figs. 2 and 5) in the plate 36. Opposite the lower portion of this groove is a recess 54 in the plate 34, and from the groove and recess lead grooves 56 registering with each other and forming a passage opening through the end of the nozzle section to coat the root of the channel and a small fraction of the channel base. Along this passage, the plate'36 is cut away to furnish a discharge slot 58 (Fig. 4) of suicient length to extend for the full width of a channel flap applied to it. -The point 51 of the section 30, entering the angle or root of the channel, furnishes a gage to position the work as the operator advances it. Toward this point, the walls 59 and 6| adjacent to the discharge slot are inclined downwardly and outwardly. The surface 59 on the plate 34 is arranged to receive contact of the channel ap, but at 6| the plate 36 is depressed to prevent the wall from wiping away the cement which has been deposited by the slot 58 (Fig. 4)

The bed section 32 of the nozzle has an arm 60 provided with lugs 62, 02 lying at opposite sides of a projection from a bracket 64 attached to the side of the body I8. Through the bracket projection and the arm lugs is a pivot pin its axis approximately intersecting the gaging end portion 51 of the nozzle section 30. Thus, the nozzle section 32 may move toward and from the channel bed in a plane substantially parallel to section 30 about an axis coinciding with the point at which it is guided. Extending through the arm 60 is a passage 68 (Figs. 3 and 6) leading through an end face 10. With it registers an opening 12 from a recess 14 in an inner plate 16 of the nozzle section 32. A second plate 18 of this nozzle section closes the outer side of the recess 14, both plates being secured tothe arm by a screw B0. The inner side of the plate 13 is recessed at 82, the wall along the lower portion of this recess forming, with the lower edge ofthe plate 16, a slot 84, which will extend in a generally horizontal direction across the channel bed being operated on and coat the whole width of the bed even at the widest point therein. To the root of the channel, a passage 86 delivers from the recess 14, 82 through the point of the nozzle section 32. Cement is supplied to the recess by way of the passage 68 and a flexible tube or conduit 88 which joins said passage to the body passage 42 (Fig, 3). Flow through these passages 68 and 42 may be proportioned correctly by adjustment of the screw 48 which controls the passage 42 directly and forces the balance of the cement delivered by the pump into the passage 68. 'I'he edge of the nozzle section 32 in which is the slot 84 is drawn yieldably down by a tension spring 90 joining a lateral projection from one of the lugs 62 to the nozzle body. This allows the section to float over the bed of the channel, it rising and falling as the contour of said bed or the angle at which the operator presents the work varies. At all times, it remains in correct applying relation. 'Ihe edges 9| of the nozzle section 32 at each side of the slot 84 are shown as arcuate or curved inwardly. This curve preferably lies between an arc which would approximate the maximum transverse curvature of the channel bed, as at the shank of a shoe, and the chord of the arc, this corresponding to the comparatively flat bed at the forepart. This mean nozzle contour will give a proper delivery of cement to the bed about the entire channel. The length of the slot may be equal to the maximum width of the channel, as at the shank. Although a portion of the slot may extend outside the narrower channel bed at the forepart, cement willnot be discharged here to drip from the nozzle, because the supply of cement may be made such that its adhesion to the sole of the shoe is necessary to complete its flow from the nozzle. Outside the sole edge, the cohesion of the cement and its adhesion to the nozzle retain it against discharge. To avoid interference with the cement which has been laid `on the channel bed by the slot 84, the edge 9| of the plate 18 is higher than the corresponding edge of the plate 16, as are also both the similarly located edges of the plates 34 and 36 of the nozzle section 30 (Fig. 2).

The operator applies the channel of the sole S, assembled with its upper U, to the nozzle section 30, the nozzle point 51 lying at the root a of the channel (Figs. 1 and 2) and the sole being substantially horizontal, in which position it may best be `seen and manipulated. The slot 84 in the nozzle section 32is drawn yieldably by the spring 90 into delivering relation with the channel bed' b. On lowering a threadle rod (not shown), the connections to it swing down the arm |26 to bring the rounded edge of a feed roll |22 into contact with the shoe upper and carry in, by a rod 220, a supporting arm |64 pivoted at |62 to present the flap engaging surface of a nger |60 in pressing relation to the channel flap c. The work thus being ready for advance, the rod connections open the valve |04, so cement is delivered through the nozzle slot 58 to the inner face of the channel ap c, through the slot 84 to the channel bed b and through the passages 56 and 86 tothe root a of the channel. .f

The operator, aided by the rotation of the roll |22, feeds the work forward, the nozzle point 51 serving as a gage throughout its travel. The head of the finger |60, oscillated by a rod between the sole and the laid-back ilap ythe channel bed, being yieldable in a direction heightwise of the sole as said section pivots on the rod 66 and accommodating themselves both to the changes of transverse contour and the angle of the channel resulting from the diiering form of the bed, as between the forepart and shank, and from the position in which the operator holds the work. The action will be better understood on comparing the showing of Figs. 2 and '1 of the drawings, in which the nozzle appears, respectively, in co-operation with the channel at the forepart and at the shank of the shoe. The eiect of the spring on the section 32 also causes this to respond to changes in the contour of the bed which might be too abrupt for the operator to follow. When the forepart of the shoe, in its feed, :is rocked on the gage point 51 of the nozzle, the upper will move over the edge of small curvature of the roll |22. At

the shank, the increased rocking made necessary by the .form of the shoe will transfer the' area of contact tothe roll periphery of'g'reater curvature. In each instance, these lateral movements, through different angles and in'the change from one to the other, will, because lof the* corresponding curvatures of the roll Aperiphery and their blending into each other, be-effected smoothly, without interference ,with the advance -ofI the work. Having Acoatedthe entire channel, the operator releases the treadle rod, which is raised by its spring. The Valve |04 is first closed, then the feed roll |22 and finger |60 are returned to their elevated positions clear of the nozzle and the completed work may be removed from the machine.

This application is a division of anapplication for Letters Patent of the United States Serial No.

170,078, filed October 20, 1937, in my name, for improvementst in Shoe-bottom-coating machines, which has matured as Letters Patent No. 2,195,416, granted Apr. 2, 1940, and in which are claimed features of the machine to which the nozzle described above may be applied.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for coating shoe bottoms, a nozzle comprising a plurality of applying sections to coat adjacent portions of the work which have a changing relation along the path to be coated, one of said sections being secured against movement during delivery of the coating substance while another is mounted for displacement from normal position under pressure of a piece of work presented thereto.

2. In a machine for coating shoe bottoms, a nozzle comprising a plurality of applying sections cooperating to jointly coat a larger portion of the irregular surface of a piece of work than can be coated by either section acting alone, one of said sections being secured against movement during delivery of the coating substance while another is mounted for movement under pressure of a piece of work held against said firstmentioned section, means comprising a passage for delivering the coating substance to one of the sections, and connections for delivering the coating substance from such passage to another section.

3. In a machine for coating shoe bottoms, a nozzle comprising a supporting body, a nozzle section secured against movement on the body and having a work-engaging end against which a portion of the work -may be pressed and by which it may be guided and a nozzle section pivoted upon the body to swing about an axis passing through the work-engaging end of the stationary section to accommodate the lchanging relation of adjacent portions of the work.

4. In a machine for coating shoe bottoms, a nozzle comprising two rigid nozzle sections having diverging outlet openings to coat separate angularly related surfaces, said nozzle sections being mounted side by side for relative movement in substantially parallel planes to accommodate the varying angular relation between the surfaces coated.

5. In a machine for coating shoe bottoms, a nozzle comprising two nozzle sections mounted side by side for relative movement to coact with adjacent portions of the shoe bottom the relation of which varies around the periphery thereof, the sections being provided with delivery slots for the coating substance, such slots lying at an angle to each other and one of said slots opening through a portion of a nozzle section having a curved surface for .coaction withv a curved portion of a shoe bottom. v Y

6. In a channel-cementing machine, a nozzle comprising a flap-coating section. and a bedcoating section each having an outlet opening and mountedv for movement to yvary the angular relation of the outlet openings of said `sections relatively to each other, means lto conduct cement to one section, and a flexible cement-delivering conduit connecting the sections.

7. In a channel-cementing machine, a nozzle comprising a stationary flap-coating section, a bed-coating section mounted to yield substantially heightwise of the shoe bottom under pressure of the work, a conduit supplying cement to the flap-coating section and a flexible cement-delivering conduit connecting the sections.

8. In a channel-cementing machine, a nozzle comprising a stationaryflap-coating section and a bed-coating section movably mounted to yield substantially heightwise of the shoe bottom under pressure of work presented thereto, the flap-coating section being shaped to engage the channel at its root and furnish a guide for the work.

9. In a channel-cementing machine, a nozzle comprising a stationary flap-coating section and a bed-coating section yieldably mounted to recede under pressure' of `work presented thereto, the flap-coating section being pointed to engage the channel at the root and having a delivery slot extending upwardly therefrom, the bed-coating its lower portion.

10. In a channel-cementing machine, a nozzle comprising a stationary flap-coating section and a bed-coating section pivoted to yield under pressure of work presented thereto, the flap-coating section being shaped to engage the channel at the root and furnish a guide for the work, the axis of the pivot of the bed-coating section passing approximately through the root-engaging portion of the flap-coating section.

11. In a channel-cementing machine, a nozzle comprising a flap-coating section and a bed-coating section mounted for movement relatively to each other to accommodate changes in the relation of the parts to be coated as successive parts of the channel are cemented, the bed-coating section having a passage leading to a surface provided with a delivery opening, said surface having a contour between a curve generally corresponding to the maximum transverse curvature of the bed and a chord of such curve.

12. In a cementing machine, a nozzle comprising a body, plates secured to the body and furnishing between them a cement-delivering passage,

an arm pivoted upon the body and plates securedr to the arm and furnishing between them a cement-delivering passage.

13. In a cementing machine, a nozzle comprising a body, plates secured to the body and furnishing between them a cement-delivering passage opening between side edges of the plates, an arm pivoted upon the body and plates secured to the arm and furnishing between them a cement-delivering passage opening between lower edges of the plates.

14. In a cementing machine, a nozzle comprising a body, plates secured to the body and furnishing between them a cement-delivering passage opening between side edges of the plates, an arm pivoted upon the body, plates secured to the arm and furnishing between them a cement-delivering passage opening between lower edges of section being provided with a delivery slot along f the plates and a spring urging the plates forming the latter opening toward the work.

15. In a cement machine having a frame pro.- vided with a projection, a nozzle having a portion adapted to rest against the projection, a clamping lever fulcrumed upon the nozzle, and means arranged to force the lever against the frame projection to clamp the nozzle thereon.

` 16. In a cementing machine having a frame provided with a projection, a nozzle having a portion adapted to rest upon the projection, a. clamping lever fulcrumed upon the nozzle, and a screw threaded through the lever and engaging the nozzle to force said lever against the frame projection.

WILBUR LE ROY MACKENZIE.

CERTIFICATE OF CORRECTION. Patent No. 2,225,066. December 17, 19M).

WILBUR LE ROY MacKENZIE. I It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column, line 2'?, for "threadle" read --treadle; page 5, first cole umn, line 18, for improvementst" read improvements; page li, first column, line 5, claim l5, for "cement" read cementing; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office. signed and sealed this 23th day of January, A.; D. 19in.

Henry Van Arsdale, (Seal) Acting Commissioner of Patentsc 

